Charged for services that I did not subscribe to

i was billed for content services that I did not subscribe to. Cancelled on 8 June and awaiting R69.00 credit for charges on last months invoice. Now I see that the charges are still being charged for this month, even though I receive SMS cancelling this service. Now an additional R70.00 for this month. Phoned Vadacom, got a agent working from home, thjat would not listen, got very "SMART" with me on the call, them terminated. Called again and got an agent that addressed the issue with the same information. Vodacom internal system seem to be failing and its is the client that is suffering. Again a case of not caring about the small guy. How can Vodacom accept billing if the client has not subscribed.